Truck-bolster.



No. 735,044. PATENTED JULY 28, 1903. C. VANDERBILT.

TRUCK BOLSTER.

APPLICATION FILED FEB. 20, 1903.

N0 MODEL.

UNITED STATES Patented July 28, 1903.

CORNELIUS VANDERBILT, OF NEW YORK, N. Y.

TRUCK-BOLSTER.

SPECIFICATION formingpart of Letters Patent No. 735,044, dated July 28,1903. Original application filed July 26, 1902, Serial No. 117,073.Divided and this application filed February 20, 1903. Serial To (tZZwhom it may concern.-

Be it known that I, CORNELIUS VANDER- BILT, a citizen of the UnitedStates, and a resident of the borough of Manhattan, city and State ofNew York, have invented certain new and useful Improvements inTruck-Bolsters, of which the following is a specification.

This application is a division of an application filed July 26, 1902,Serial No. 117,073.

Certain features of the bolster herein shown and described are claimedin the application of which this is a division and also in applicationSerial No. 110,139, filed June 4, 1902.

The object of my invention is the production of a bolster characterizedby great strength combined with lightness. The bolster is preferablycast in a single piece, steel being the metal best suited for thepurpose. If desired, however, the bolster may be constructed or built upof one or more pieces of rolled, pressed, or cast metal, and I donotdesire to limit my invention to a bolster constructed of a single pieceof cast metal, but refer to the appended claims to point out and definemy invention.

In the accompanying drawings, Figure 1 is a plan, Fig. 2 a sideelevation, partly in section, and Fig. 3 an end elevation, of myimproved bolster.

The truck-bolster comprises an upper web 4 and a lower web 5. These websare separated at their middle portions and gradually converge towardtheir ends until they unite, forming a single web 6. The side bearings 2of the bolster are located between the center bearing 1 and the point ofjunction of the webs 4. and 5. This construction renders the bolsterstronger for resistinglateral and other stresses imparted thereto by theside bearings than would be the case if the side bearings were locatedbeyond the said point of junction.

The bolster is further provided with front and rear walls 7, whichextend from the top web 4: to the bottom web 5, whereby the bolster isformed as a hollow beam. For convenience in casting and for lightnessthe ap- (No model.)

ertures 10 may be formed in the said walls. The center portions of thewalls 7, however, are preferably continuous, as shown at 11. The walls 7preferably extend from one end of the bolster to the other, the portions9 of the said walls depending from the webs 6 at the ends of thebolster. The lower edges of the portions 9 are united by a horizontalweb 8, which may serve as a spring-seat for the ends of the bolster. Theparts 6, 8, and 9 together form a box-like structure approximatelyrectangular in cross-section and having open ends which contribute tothe lightness of the bolster.

Preferably, although not necessarily, the middle portion of the bolsteris provided with transverse braces 12 and a longitudinal brace 13, whichunites the upper and lower webs 4. and 5 and walls 7. It is evident,however, braces may be omitted, if desired.

Having thus described my invention, what I claim, and desire to secureby Letters Patent, is

1. A cast-metal truck-bolster having ap proximately rectangular,box-section, open ended ends, and longitudinal top andbottommembers,said members beingintegral at their ends and forming one wall ofsaid box, substantially as described.

2. A truck-bolster having top and bottom webs, separated at theirintermediate portions and united at their ends, front and rear wallsdepending from said united ends, and a web connecting the lower edges ofsaid front and rear walls, substantially as described.

3. A truck-bolster comprising top, bottom,

front and rear walls forming a hollow beam,

said top and bottom walls being united at their ends, and a web unitingthe lower edges of the ends of said front and rear walls, substantiallyas described.

In witness whereof I have hereunto signed my name this 19th day ofFebruary, 1903. CORNELIUS VANDERBILT. In presence of JAMES J. Cosonovn,DELOS HOLDEN.

